Dwyer MS 621 Magnesense Differential Pressure Transmitter

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MOQ : 12 Pieces

Dwyer MS 621 Magnesense Differential Pressure Transmitter Specification

Sensor Type
Differential Pressure Transmitter

Seal Material
Silicone

Display
No Local Display

Grade
Industrial Grade

Outer Size
122 mm W x 64 mm H x 55 mm D (4.81 x 2.52 x 2.16)

Thread
1/8 NPT Female

Material
Polycarbonate Enclosure

Processing Type
Electronic

Mount Type
Panel or Duct Mount

Scale Range
0 to 250 Pa (other ranges available)

Accuracy
1% of Full Scale

Finishing
Molded Plastic Housing

Measure Pressure Of
Air and Non-corrosive Gases

Accessories
Mounting bracket, screws, installation manual

Dwyer MS 621 Magnesense Differential Pressure Transmitter Trade Information

Minimum Order Quantity
12 Pieces

Payment Terms
Cash on Delivery (COD), Delivery Point (DP), Paypal, Cash Against Delivery (CAD), Cash in Advance (CID), Cheque, Cash Advance (CA)

Main Export Market(s)
Australia, South America, Middle East, Africa, Western Europe, Asia, Central America, Eastern Europe, North America

Main Domestic Market
All India

About Dwyer MS 621 Magnesense Differential Pressure Transmitter

Dwyer Instruments MS-621

Magnesense Differential Press. Trans.,5VDC,+/- .1,.25,.5in H2O

The Series MS Magnesense Differential Pressure Transmitter is an extremely versatile transmitter for monitoring pressure and air velocity. This compact package is loaded with features such as: field selectable English or metric ranges, field upgradeable LCD display, adjustable dampening of output signal (with optional display) and the ability to select a square root output for use with Pitot tubes and other similar flow sensors. Along with these features, the magnetic sensing technology provides exceptional long term performance and enables the Magnesense transmitter to be the solution for a myriad of pressure and flow applications. Field Upgradeable LCD. No need to order two separate transmitters. Simply stock a transmitter and display and you can satisfy any customer's requests. Simply remove cover and snap the LCD onto the board. Field Selectable Ranges in metric or English. Lowers stock and inventory requirements. You'll always have the right transmitter for every job. Digital Push Button Zero and Span. Reduces calibration time significantly over other transmitters that utilize potentiometers. Lowers maintenance time and costs. Adjustable Digital Dampening smooths out unstable pressure fluctuations common in air flow applications. Field Selectable Air Velocity Mode for fan and blower applications. Unit provides square root output that accurately tracks fpm or m/s flow rate. No need for a smart programmable indicator or PLC to convert pressure to air flow. Reduces components and installation time lowering overall costs

Product Highlights

5 VDC output

selectable range +/- 0.1, 0.25, 0.5 in H2O. (+/-25, 50, 100 Pa)

panel mount

Accurate Differential Pressure Measurement

The Dwyer MS 621 Magnesense is engineered for precise measurement of differential pressure in air and non-corrosive gases up to 250 Pa. Its 1% of full-scale accuracy, rapid response time under 250 ms, and advanced electronic processing ensure dependable data for critical industrial and environmental monitoring.

Robust and Versatile Construction

Built for durability, this transmitter boasts an IP66-rated, molded polycarbonate enclosure. It withstands harsh environments, resists dust and water ingress, and is suitable for a wide range of climates. The compact design enables straightforward installation on panels or ducts using the included mounting bracket and screws.

User-Friendly Calibration and Operation

Zero and span adjustments are easily managed through convenient push-button controls, reducing setup complexity. The 4-20 mA signal output simplifies integration with standard industrial control systems, and flexible mounting allows installation in any orientation without sacrificing accuracy.

FAQs of Dwyer MS 621 Magnesense Differential Pressure Transmitter:

Q: How do I install and wire the Dwyer MS 621 Magnesense Differential Pressure Transmitter?

A: Installation is straightforward with the included mounting bracket and screws, allowing for panel or duct mounting in any orientation. Electrical wiring is accomplished via a screw terminal strip, connecting the 2-wire loop for 10-35 VDC power and the 4-20 mA output signal. Always refer to the provided installation manual for detailed instructions.

Q: What types of media can the MS 621 safely measure?

A: This transmitter is designed specifically for use with dry air and non-aggressive (non-corrosive) gases. It is not suitable for liquids or corrosive gases, as these can damage the internal components and pressure sensor.

Q: When should zero and span adjustments be performed?

A: Zero and span adjustments should be done during the initial setup to calibrate the device for the specific application range. Periodic recalibration may also be needed if readings drift over time or after maintenance, ensuring measurement accuracy within 1% of full scale.

Q: What environments can the Magnesense MS 621 tolerate?

A: The transmitter is rated IP66, offering high resistance to dust and water ingress. It operates reliably in ambient temperatures from -20C to 70C, making it suitable for both indoor and outdoor industrial environments across India.

Q: Where should I use this differential pressure transmitter?

A: The MS 621 is primarily used in HVAC systems, cleanrooms, filter monitoring, and other industrial applications where accurate low-pressure monitoring of air or non-corrosive gases is essential. Its versatility in mounting and rugged enclosure expands its range of potential environments.

Q: What are the benefits of using a 4-20 mA output signal with this transmitter?

A: A 4-20 mA signal provides superior noise immunity and allows long-distance transmission of readings without signal degradation. This standardized signal format is compatible with most industrial controllers and data acquisition systems.

Q: Is there a local display on the Dwyer MS 621 for direct pressure reading?

A: No, the MS 621 does not have a local display. All measurement data are output electronically (4-20 mA), which must be read by compatible monitoring or control equipment.

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